Corn-planter.



A. GRIE'VES.

CORN PLANTBR.

APPLICATION FILED DEO. 11, 1911 Patented June 18, '1912.

UNITED' sii-'Aris :OFFICE Lemar Giunvns; orsrnmermnn, omo, Assreiron'roINTERNATIONAL HAnvEs'rEn COMPANY, ii'coiironarion or'Nnw JERSEY.

conn-rLAm-rn,

1 i-,ozaeva To all wwm 'it 'may concern: ide it known that I ,`ALBERTGRIEVES, a.' citizen of the United States, residing at Springieldinythefcoun'ty of .Clark and. State --5 of Qh1o,-have invented. certainnew and use- '-tful Improvements" in Corn-Planters, "of

iwhich the following-is a' specification. My invention relates to cornplanters, and in "particular to 'the means for controlling' 1Q themovement of the spring-pressed cover-,f ingblades that trail in rear ofthe furrow openers and operate to close the furrow after thecorn'hasbeendeposited therein, and cone sists in providing mechanism whereby a dif-355 ferential.- pressure is applied to the'adjacent independently risingand falling blades for the purposeV of permitting them to more readilyride overf ,trash or otherJobstructions in their path of advance; theobject of my invention being to provide improved means for the purposeindicated, simple in con-` -struction and leiiicientin operation; Iattain these objects by means of the Amechanism illustrated by theaccompanying-.drawings, in whichl 'Figure .1 represents a side elevationin perspective .of a furrow opening mechanism designedftobel connectedwith other partsof v the corn plantenand having my invention forming.aJpart thereof; Fig. 2 is a detached detail,v partly inl section, anddesigned to illustrate the operation of the spring pressure mechanismas. shown in Fig. .1; and

Fig. 3 represents a-vdetail, lpartly in cross section, of Fig. 1 alongline A'-B,'il1 ustrat .ing the manner of connecting the covering bladeswith their supporting arms. 4 Like. reference characters designate thesame parts throughout the several views.

401 1. representsl a common formof drag bar 4having meansat its-frontVend whereby it may `be connected with the frame of the corn planter,'2 aseed conduit secured to the rear 'end of 'thefd'rag bar and havingfurrow opening disks 3v journaled upon oppositely disposedbearingscarried by the lower end thereof, and .it represents a runner having '3its upper end secured tothe drag bar, the ,body thereof extendingrearward and downsward toward the furrow opening disks. Extendingrearward from the upper endl of the seed conduit are two ear Amembers.5, Y's'paced vapart, arranged in-parallel vertical planes andhavingagrially aliued transverse openings therein t .ceive .the threadeatt are adapted to receive thimbles -6 therein, the tliimbles beingpro--4 Eud-witb axial `lm .reeefve o s i f Specicatiim of I ette'rsItet, Patented J une 18,1912. Applica-tion med maenner 11,1911. ,serianno. 694,921. l

8 representsarins havingppeningsattheir I front ends'that receive'th'e'belts 7 and other transverse openings at' 'their rear endsthat looselyreceive a cross pin 9 in a manner per-A mit-ting the oppositely disposedarms t0 swing freely in verticalplanes independent of each other. Theouter faces of the front ends of said arms are provided. with radiallyarranged corrugationsthat operatively en.

.gage with corresponding corrugation's upon.

the inner surfaces of lclip members 10,-providedA with axial openingsthat receivefthe bolts 7, and upontheir outersurfaces with ing blades 12.that have their lower ends curved downward, rearwardA and inward. Thebolts 7 lare received by openings inthe ear' portions 13 thatV re- Yends of bolts 414 that are received by, slots 15 in the arms, that arearwardly"extendin `ranged concentric with the axis 7 thereof in a mannerwhereby the arms may be adjusted angularly vrelative to their axes`independent y. i

Spring pressure is applied to die covering 'blades by means of a commonform of -linlr i-ibs 11 that are adapted 4to receive between 'them theupper .down-turned ends of cover-.

blades and secure vthe parts ino erative relation. The clips are provide'with up 16, having its upper end slidably'received by a rocking yoke17, having opposite ends thereof pivot-ally connected with larms 18,that4 may. be' operatively connected with the` planter structure in anypreferred manner.`v g A compression spring- 19 encircles` thejlinkandfis operative between the yoke 17 and a -pinl 2O at 'the -lower' endof the-link'to yieldinglyresist a downward movement o f arms 18 Aand theyokejconnected therewith.

2-1 represents a bracket havingv a sleeve.

portion 22 at its lower end that receives the pin 9 between the arms 8,and provided with vertically arranged upwardly extending ear portions 23that are spaced aart in the direction of the line of advance o theplanter ina manner to receive between them the lower end' of thelink-16, the link being pivotally connected therewith intermediate thearms 8 by means of a pin 24, the axis of the pin being at right angleswith'that of the, pin 20 and` in al higher plane'. whereby'` "'wlie''one ofthe covering blade-Smeets with an obstruction' and rises torelieve itself zbracket rocks aboutv the axis h .until a line drawnfroin the bearing o pi'n 9 upon; the opposite arm, through the yoke 1'7,will pass near the axis of pin 24 and" tli'erebyrelieve the op ositearm" of practically all pressure -of-t e spring mechanism while theobstruction is -bein .ner .in directin passed, -the rnechanismoperatlng1n a di erential maneitherto one or t. e other in a vertical plane asthe blades rise and fall independently, or to equalize the pressurethereof when the two blades are operating under normal conditions. j y v'What I claim as my invention, and desire to secure'by Letters Patent,is:

l. A corn planter including,l in combination, ,furrow opener's,'a seedconduit, inde'- pendently rising and falling covering blades trailing inrear of said furrow openers, and

spring Vpressure mechanism operative to ,"yleldinfrly press-'said bladesin contact with the soi, said mechanismA4 including means 305 wherebythe. pressure is 'distributed in a differential manner upon the tworising and falling bla-des,l less u on the higher and greater upon thecoact-lng blade.

2. Acorn planter including, inv combinatlon, furrow openers, ,a seedconduit, inde- .pendently rising and falling covering blades Strailing1n .rear of said furrow openers and upon'opposite sides thereof, aspring pres- :sure mechanlsm operative to yieldingly `the 'forcel of thespring hmm its

echanis'm includinl -a rocking bracket 'opposite end s t ereof looselyconf' neet with said blades, and a s ring-V 1pressedlink V"connectedwith said -bracet -1n a plane above the'connection thereof with saidVblades,4 whereby a rising or falling movement of fs'aid bladesindependentlyprag-aia Blaas. in-

wiui'fn-Sairm will cause the zax is of the connection of said linkwit-hsald bracket to move-'from side to side of av longitudinal verticalplaneand thereby cause differential-- pressure to be directed upon theindependently movable blades.

A corn planter including, in combination, a seed conduit, -furrow`openers connected with said seed conduit, farms pivot-` ally connectedwith said seed conduit, extendino' in rear-.thereof and adapted' to rise'independently at their rear ends, covering-blades secured to said.armsya rocking bracket having opposite ends thereofloosely'connectedwith the rear ends of said arms, fand a s ring-pressed link pivotallyconnected wit the middle portion of said bracket above the pivotalconnection thereof with said'arms, whereby a rising or `falling movementof said'arms inde ndently will cause the axis of the pivota .conneet-ionof said link with said bracket to move from side to side of alongitudinal vertical plane in a manner to cause a .dif- .ferentialpressure to be directed toward the independently movable arms'. I

e ALBERT GRIEVES. Y

, Witnesses:

H. J. GUY'roN, Amun H. TOMLINsoN.

